Objective: The aim of the study is the analysis of osteoarticular problems (OAP) occurring in a group of computer users (CU) in search of correlation between symptoms and different etiological factors.
Material And Method: Questionnaire of 31 items dealing with personal data, the activity of the CU, stress, the occurrence of osteoarticular problems during the last month (Oaplm) and last twelve months (Oaptm) and a checklist of 17 items covering the physical characteristics of the workplace.
Results: DESCRIPTIVE ANALYSIS * 810 respondents of mean age 36 +/- 9 years and predominantly female (69%) *
Features: seniority at the workplace (12.
We present an analysis of factors influencing carrier transport and electroluminescence (EL) at 1.5 µm from erbium-doped silicon-rich silica (SiOx) layers. The effects of both the active layer thickness and the Si-excess content on the electrical excitation of erbium are studied.
View Article and Find Full Text PDFThis study investigates the influence of the film thickness on the silicon-excess-mediated sensitization of Erbium ions in Si-rich silica. The Er3+ photoluminescence at 1.5 μm, normalized to the film thickness, was found five times larger for films 1 μm-thick than that from 50-nm-thick films intended for electrically driven devices.
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